108f71a1eSMartynas Pumputis // SPDX-License-Identifier: GPL-2.0 208f71a1eSMartynas Pumputis /* Copyright (c) 2021 Isovalent, Inc. */ 308f71a1eSMartynas Pumputis #include <linux/bpf.h> 408f71a1eSMartynas Pumputis #include <bpf/bpf_helpers.h> 508f71a1eSMartynas Pumputis 608f71a1eSMartynas Pumputis struct inner { 708f71a1eSMartynas Pumputis __uint(type, BPF_MAP_TYPE_ARRAY); 808f71a1eSMartynas Pumputis __type(key, __u32); 908f71a1eSMartynas Pumputis __type(value, int); 1008f71a1eSMartynas Pumputis __uint(max_entries, 4); 1108f71a1eSMartynas Pumputis }; 1208f71a1eSMartynas Pumputis 1308f71a1eSMartynas Pumputis struct { 1408f71a1eSMartynas Pumputis __uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS); 1508f71a1eSMartynas Pumputis __uint(max_entries, 0); /* This will make map creation to fail */ 16*bd368cb5SHengqi Chen __type(key, __u32); 1708f71a1eSMartynas Pumputis __array(values, struct inner); 1808f71a1eSMartynas Pumputis } mim SEC(".maps"); 1908f71a1eSMartynas Pumputis 2008f71a1eSMartynas Pumputis SEC("xdp") xdp_noop0(struct xdp_md * ctx)2108f71a1eSMartynas Pumputisint xdp_noop0(struct xdp_md *ctx) 2208f71a1eSMartynas Pumputis { 2308f71a1eSMartynas Pumputis return XDP_PASS; 2408f71a1eSMartynas Pumputis } 2508f71a1eSMartynas Pumputis 2608f71a1eSMartynas Pumputis char _license[] SEC("license") = "GPL"; 27